document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=353161>Question 353161</A>: <I><SPAN STYLE=\"word-break: break-all;\"> soybean meal is 12%protein, cornmeal is 6% protein, how many poinds of each should you mix together in order to get 240lb mixture that is 7%protein?\r<BR>\n" );
document.write( "\n" );
document.write( "12x+6x-7=240? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #252752 by </B><A HREF=/tutors/aboutme.mpl?userid=Fombitz><B>Fombitz(32388)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Fombitz><IMG SRC=http://www.algebra.com/images/aboutme-small.gif BORDER=0 alt=\"About Me\" VALIGN=MIDDLE></A>&nbsp;<IMG SRC=http://www.algebra.com/cgi-bin/show-face.mpl?user=Fombitz><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=252752\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> First name your variables.<BR>\n" );
document.write( "Let S be the amount of soybean meal.<BR>\n" );
document.write( "Let C be the amount of corn meal. <BR>\n" );
document.write( "Now find the total weight equation.<BR>\n" );
document.write( "1.<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=S%2BC=240 ALIGN=MIDDLE  ALT=\"S%2BC=240\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "Now find the protein concentration equation.<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=12S%2B6C=7%28240%29 ALIGN=MIDDLE  ALT=\"12S%2B6C=7%28240%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "2.<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=6S%2B3C=840 ALIGN=MIDDLE  ALT=\"6S%2B3C=840\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "Now you have 2 equations with 2 unknowns. <BR>\n" );
document.write( "Multiply eq. 1 by (-3) and add the equations together.<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=-3S-3C%2B6S%2B3C=-720%2B840 ALIGN=MIDDLE  ALT=\"-3S-3C%2B6S%2B3C=-720%2B840\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=3S=120 ALIGN=MIDDLE  ALT=\"3S=120\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=highlight%28S=40%29 ALIGN=MIDDLE  ALT=\"highlight%28S=40%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >lb.<BR>\n" );
document.write( "Then from eq. 1,<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=40%2BC=240 ALIGN=MIDDLE  ALT=\"40%2BC=240\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=highlight%28C=200%29 ALIGN=MIDDLE  ALT=\"highlight%28C=200%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >lb. </SPAN>\n" );
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